Mortgage Payment & Amortization Calculator
Calculate total monthly mortgage payments including principal, interest, taxes, insurance, and HOA fees alongside a full amortization schedule.
Loan Parameters
Add property tax, insurance, HOA dues, and PMI to see your full PITI payment.
Total Monthly Payment
$2,842.11
Tax + Insurance + HOA + PMI
Total Interest
$459,160
Over 30 years
Total Paid
$1,023,160
56.1% interest
Loan Amount
$360,000
20.0% down
Principal vs. Interest Over Time
Understanding Your Monthly Mortgage Components
Principal & Interest (P&I)
The core payment portion that reduces loan balance and compensates the lender.
Escrow Account
A holding account managed by lenders to pay property taxes and insurance bills on your behalf.
Private Mortgage Insurance (PMI)
Mandatory protection fees required when purchasing a home with under 20% down payment.
Amortization Schedule
A complete payment schedule detailing how each monthly installment shifts from interest-heavy to principal-heavy over time.
Frequently Asked Questions
Housing Cost Ratio Benchmarks
| Housing Cost Ratio | Financial Impact | Recommended Action |
|---|---|---|
| Under 28% | Target | Comfortable budget. Most of your income remains available for other goals. |
| 28% to 36% | Moderate Risk | Review discretionary spending. Build a larger emergency fund for rate or tax increases. |
| Over 36% | High Debt Stress | Consider a lower purchase price, larger down payment, or a longer loan term to reduce monthly burden. |
3 Common Operational Mistakes
Forgetting to factor annual property tax increases into long-term budgets.
Underestimating private mortgage insurance costs on lower down payments.
Focusing strictly on interest rate while ignoring loan origination fees.
Payment Distribution Over Time
| Year | Principal | Interest |
|---|---|---|
| Year 1 | 21% | 79% |
| Year 15 | 54% | 46% |
| Year 30 | 97% | 3% |
The Mortgage Payment Formula
The standard fixed-rate mortgage payment is calculated using the following formula:
M = P x r(1 + r)^n / ((1 + r)^n - 1)- M = Monthly payment
- P = Loan amount (home price minus down payment)
- r = Monthly interest rate (annual rate divided by 12, then by 100)
- n = Total number of payments (loan term in years x 12)
Each month, the interest portion is calculated as the remaining balance multiplied by the monthly rate. The principal portion is the total payment minus the interest portion. As the balance decreases, more of each payment goes toward principal, accelerating your equity growth over time.